I love to melt different practice together to increase emotions and sensations and become harder and so deep.
I used a gas mask to control his breath and to make him feel focused to himself and his breath, he had also a limited eyesight. Leather mitz to deprivate completely his touch's sensory. Feet and hands blocked open to the sling chair to keep open the pleasure and feelings.
Fucking machine was banging his holes completely and deeper so I was free to touch him and feel his sensation with my hands, watching his mixture of pleasure and pain come trough.
I spent nice exciting time with him in this position, completely blocked to take my pleasure.
I'm sure you want the same!